pH suitable for ptyalin action is

Options

A. 6.8
B. 7.8
C. 3.2
D. 9.3

Answer

To determine the pH suitable for the action of ptyalin (also known as salivary amylase), we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Enzyme**: Recognize that ptyalin is an enzyme that is also referred to as salivary amylase. It is secreted by the salivary glands in the mouth.

2. **Understand the Function**: Salivary amylase plays a crucial role in the digestion of starch. It catalyzes the hydrolysis of starch into simpler sugars, primarily maltose and dextrin.

3. **Consider the pH Range**: Enzymes, including salivary amylase, function optimally at specific pH levels. The activity of an enzyme is highly dependent on the pH of its environment.

4. **Evaluate the Given pH Values**: The question provides four pH values: 7.8, 6.8, 3.2, and 9.3. We need to determine which of these is suitable for the action of ptyalin.

5. **Analyze Each pH Value**:
- **pH 3.2**: This is very acidic and unsuitable for ptyalin action.
- **pH 6.8**: This is slightly acidic to neutral and is within the optimal range for ptyalin activity.
- **pH 7.8**: This is slightly basic but may not be optimal for ptyalin.
- **pH 9.3**: This is too basic and would likely denature the enzyme.

6. **Conclusion**: Based on the analysis, the pH that is most suitable for the action of ptyalin is **6.8**.

### Final Answer:
The pH suitable for ptyalin action is **6.8**.

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